The scientific theory of evolution by natural selection was conceived independently by two British naturalists, Charles Darwin and Alfred Russel Wallace, in the mid-19th century as an …

Dec 2, 2025 · Evolution, theory in biology postulating that the various types of living things on Earth have their origin in other preexisting types and that the distinguishable differences are …

Evolution helps us to understand the living world around us, as well as its history. Biological evolution is not simply a matter of change over time.

Darwin and a scientific contemporary of his, Alfred Russel Wallace, proposed that evolution occurs because of a phenomenon called natural selection. In the theory of natural selection, …

Apr 13, 2025 · But evolution is more than just biology’s guiding principle; it’s a story about time, change, and survival. Although the idea that life evolves wasn’t entirely new in the 19th …

Evolution is a process of continuous branching and diversification from common trunks. This pattern of irreversible separation gives life's history its basic directionality.

3 days ago · Evolution, as related to genomics, refers to the process by which living organisms change over time through changes in the genome. Such evolutionary changes result from …

The timeline of life represents the current scientific theory outlining the major events during the development of life on Earth. Dates in this article are consensus estimates based on scientific …

Dec 2, 2025 · Evolution can be seen as a two-step process. First, hereditary variation takes place; second, selection is made of those genetic variants that will be passed on most effectively to …

Nov 29, 2025 · Evolution has answers. The vine twining on the fence, the insect crawling over the sidewalk, and the flock of birds wheeling in the sky might look perfectly at home, flourishing …